/*
 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2005 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.jaxp.validation;

import com.sun.org.apache.xerces.internal.utils.SecuritySupport;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

/**
 * <p>Used to format JAXP Validation API error messages using a specified locale.</p>
 *
 * @author Michael Glavassevich, IBM
 * @version $Id: JAXPValidationMessageFormatter.java,v 1.5 2010-11-01 04:40:08 joehw Exp $
 */
final class JAXPValidationMessageFormatter {

  /**
   * Formats a message with the specified arguments using the given
   * locale information.
   *
   * @param locale The locale of the message.
   * @param key The message key.
   * @param arguments The message replacement text arguments. The order of the arguments must match
   * that of the placeholders in the actual message.
   * @return the formatted message.
   * @throws MissingResourceException Thrown if the message with the specified key cannot be found.
   */
  public static String formatMessage(Locale locale,
      String key, Object[] arguments)
      throws MissingResourceException {

    ResourceBundle resourceBundle = null;
    if (locale != null) {
      resourceBundle =
          SecuritySupport.getResourceBundle(
              "com.sun.org.apache.xerces.internal.impl.msg.JAXPValidationMessages", locale);
    } else {
      resourceBundle =
          SecuritySupport.getResourceBundle(
              "com.sun.org.apache.xerces.internal.impl.msg.JAXPValidationMessages");
    }

    // format message
    String msg;
    try {
      msg = resourceBundle.getString(key);
      if (arguments != null) {
        try {
          msg = java.text.MessageFormat.format(msg, arguments);
        } catch (Exception e) {
          msg = resourceBundle.getString("FormatFailed");
          msg += " " + resourceBundle.getString(key);
        }
      }
    }

    // error
    catch (MissingResourceException e) {
      msg = resourceBundle.getString("BadMessageKey");
      throw new MissingResourceException(key, msg, key);
    }

    // no message
    if (msg == null) {
      msg = key;
      if (arguments.length > 0) {
        StringBuffer str = new StringBuffer(msg);
        str.append('?');
        for (int i = 0; i < arguments.length; i++) {
          if (i > 0) {
            str.append('&');
          }
          str.append(String.valueOf(arguments[i]));
        }
      }
    }
    return msg;
  }
}
